OMAPL138如何在Linux下使用EDMA3驱动

yyj · 发表于 2018-1-30 11:01:43

本帖最后由 yyj 于 2018-1-30 11:01 编辑

[code]EDMA sample test application2 q% @: l& V9 K; j" s2 |, U5 m
/*. ~2 l5 E* A) m, W7 q* v) i9 h
* edma_test.c. G$ x; Y; B% ^$ h5 m X
*( |$ C2 M5 K) {5 R: b# J
* brief EDMA3 Test Application' ]5 L0 P @7 @* s4 }% `
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* This file contains EDMA3 Test code.
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* NOTE: THIS FILE IS PROVIDED ONLY FOR INITIAL DEMO RELEASE AND MAY BE
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* REMOVED AFTER THE DEMO OR THE CONTENTS OF THIS FILE ARE SUBJECT; Q3 Q9 o7 O% B7 U
* TO CHANGE.. Q7 E0 Q/ E$ H* L5 K8 h) D5 P
*
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* Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/7 R3 O% {. R; Q- H0 i* G
*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation version 2.
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*
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* This program is distributed "as is" WITHOUT ANY WARRANTY of any. O b( \) ?$ z% n+ d
* kind, whether express or implied; without even the implied warranty2 @7 L0 Q* q0 r1 `, M }
* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the- C, Y, h2 s* U2 d3 j6 m7 l- Q
* GNU General Public License for more details.
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*/
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#include <linux/module.h>
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#include <linux/init.h>% [4 D8 ~4 Y D# \0 a
#include <linux/errno.h>
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#include <linux/types.h>) Y% r/ w8 O% C$ W
#include <linux/interrupt.h>1 E0 H0 o9 l$ `
#include <asm/io.h>4 y1 J5 I, Q4 }5 `1 W/ q) K
#include <linux/moduleparam.h>" ?7 ^/ y4 p) @& t" f8 B
#include <linux/sysctl.h>: j' a( C) ?: G" n- F% Q. l
#include <linux/mm.h>
#include <linux/dma-mapping.h>
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#include <mach/memory.h>1 f1 L1 J, E h- Y j
#include <mach/hardware.h>7 g/ W! Q% n+ \" i% W1 |; G& M
#include <mach/irqs.h>* b/ C2 d, n. |6 F* P4 [' z6 i
#include <asm/hardware/edma.h>
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$ \# c4 c9 z3 p z: m6 C) N, c
#undef EDMA3_DEBUG! a, j' v9 |: K+ p( a
/*#define EDMA3_DEBUG*/4 @7 U* h1 B: ^$ N% @: e
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#ifdef EDMA3_DEBUG" K: m# @: t2 I" C/ O- `& e* L
#define DMA_PRINTK(ARGS...) printk(KERN_INFO "<%s>: ",__FUNCTION__);printk(ARGS)
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#define DMA_FN_IN printk(KERN_INFO "[%s]: start\n", __FUNCTION__)" ~: l; `4 q0 u( Q% T8 U `
#define DMA_FN_OUT printk(KERN_INFO "[%s]: end\n",__FUNCTION__)
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#else
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#define DMA_PRINTK( x... )
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#define DMA_FN_IN6 q8 F3 t$ c3 M6 Y2 i/ p
#define DMA_FN_OUT
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#endif% x: p2 n: v- _ s# u
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#define MAX_DMA_TRANSFER_IN_BYTES (32768)
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#define STATIC_SHIFT 3
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#define TCINTEN_SHIFT 20
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#define ITCINTEN_SHIFT 212 D1 w3 c& M' q( }. t
#define TCCHEN_SHIFT 22" v: W, h. o! c, O5 {
#define ITCCHEN_SHIFT 23
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static volatile int irqraised1 = 0;( l) T3 m/ n/ _* J: {) t3 u
static volatile int irqraised2 = 0;
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int edma3_memtomemcpytest_dma(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);
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int edma3_memtomemcpytest_dma_link(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);
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int edma3_memtomemcpytest_dma_chain(int acnt, int bcnt, int ccnt, int sync_mode, int event_queue);
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dma_addr_t dmaphyssrc1 = 0;
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dma_addr_t dmaphyssrc2 = 0;0 D# e9 i4 P! j
dma_addr_t dmaphysdest1 = 0;
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dma_addr_t dmaphysdest2 = 0;
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char *dmabufsrc1 = NULL;) A- |" k7 B, P
char *dmabufsrc2 = NULL;
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char *dmabufdest1 = NULL;4 ]' M, Z9 o. j
char *dmabufdest2 = NULL;
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static int acnt = 512;
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static int bcnt = 8;% E1 r: f+ y8 T; _7 Z
static int ccnt = 8;
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module_param(acnt, int, S_IRUGO);
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module_param(bcnt, int, S_IRUGO);
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module_param(ccnt, int, S_IRUGO);

复制代码

   这是在TI上找到的一个针对Davanci处理器简单的EDMA3驱动程序测试例程的一部分，我在编译的过程中是用
arm-none-linux-gnueabi-gcc  -I /home/tl/omapl138/linux-3.3/arch/arm/include -I /home/tl/omapl138/linux-3.3/include  EDMA3test.cpp -o EDMA3这个命令来链接库文件进行编译，但是报的错误特别多，我又试着一个函数一个函数往进加，仍然是很多错误。
   我想问一下如何用一个简单的程序来测试一下EDMA3的驱动。

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[未解决] OMAPL138如何在Linux下使用EDMA3驱动